Origin

This character combines two parts: the top component suggests something complete or whole, while the bottom component is the radical for jade or precious stone. Together they depict a sphere or ball made of jade—something round, complete, and valuable. The character evolved to mean not just jade spheres specifically, but spheres or balls in general. The shape reflects how ancient Chinese writers combined the idea of wholeness with the material or category (jade/precious objects) to express this rounded form.